The Daleks interrogate Romana. (TV: Destiny of the Daleks)
By the Dalek-Movellan War, the Daleks had developed an interrogation machine which could be used effectively to determine the veracity of answers given by a prisoner. (PROSE: Doctor Who and the Destiny of the Daleks, TV: Destiny of the Daleks)
Scrutinising Dalek history during the Time War, the Time Lords understood that both the interrogation machine and the duplication machine were refinements of the earlier Mind Analysis Machine. By that time, specialised units were adapted so that thought patterns could be read by bringing the skull into contact with the Daleks' suction cups. (PROSE: Dalek Combat Training Manual)
